• 关键词：CO₂  氨水  喷雾  吸收  吸收速率

• 基金项目：北京市科委科技计划课题(No.Z08040902950803)

• 曾庆
• 清华大学航天航空学院工程力学系, 北京 100084

• 郭印诚
• 清华大学航天航空学院工程力学系, 北京 100084

• 牛振褀
• 清华大学航天航空学院工程力学系, 北京 100084

• 林文漪
• 清华大学航天航空学院工程力学系, 北京 100084

• 摘要：为考察氨水细喷雾吸收CO₂的能力,对喷雾塔中氨水细喷雾吸收CO₂的反应过程进行了实验研究,测定了氨水吸收CO₂的速率.实验结果表明,CO₂的吸收速率随着氨水浓度、气体流量的升高而明显增大,随氨水流量升高也有所增加,CO₂的吸收速率随CO₂进口浓度的升高呈线性增加.当喷雾塔中温度低于40℃时,CO₂的吸收速率随着塔内温度的升高而增加,当温度超过40℃时,CO₂的吸收速率开始下降.实验结果表明,氨水吸收CO₂的速率与CO₂的浓度呈线性变化规律,即对CO₂呈一级反应.

• Abstract：The absorption of CO₂ into aqueous ammonia was studied in a spray column at atmospheric pressure. The specific flux per unit volume of CO₂ absorption into aqueous ammonia was measured. Experimental results show that the absorption rate of CO₂ increases remarkably with the ammonia concentration and the gas flow rate. The absorption rate of CO₂ increases linearly with the CO₂ inlet concentration. The experimental results also show that the temperature affects the absorption rate of CO₂. When the temperature in the spray tower is lower than 40℃,the absorption rate increases with temperature,whereas when the temperature in the spray tower is higher than 40℃,the absorption rate decreases with increasing temperature.

• Key words：carbon dioxide  ammonia  spray  absorption  absorption rate

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